Ds\Vector::rotate

(PECL ds >= 1.0.0)

Ds\Vector::rotate — Rotates the vector by a given number of rotations

说明

publicDs\Vector::rotate
( int$rotations
) : void

Rotates the vector by a given number of rotations, which is equivalent
to successively calling $vector->push($vector->shift()) if the number
of rotations is positive, or $vector->unshift($vector->pop()) if negative.

参数

rotations

The number of times the vector should be rotated.

返回值

没有返回值。. The vector of the current instance will be rotated.

范例

Example #1 Ds\Vector::rotate() example

<?php$vector = new \Ds\Vector(["a", "b", "c", "d"]);

$vector->rotate(1); // "a" is shifted, then pushed.print_r($vector);

$vector->rotate(2); // "b" and "c" are both shifted, the pushed.print_r($vector);?>